290502428 has 6 divisors (see below), whose sum is σ = 508379256. Its totient is φ = 145251212.

The previous prime is 290502427. The next prime is 290502437. The reversal of 290502428 is 824205092.

It is a junction number, because it is equal to n+sod(n) for n = 290502394 and 290502403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290502427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36312800 + ... + 36312807.

It is an arithmetic number, because the mean of its divisors is an integer number (84729876).

Almost surely, 2^290502428 is an apocalyptic number.

It is an amenable number.

290502428 is a deficient number, since it is larger than the sum of its proper divisors (217876828).

290502428 is a wasteful number, since it uses less digits than its factorization.

290502428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72625611 (or 72625609 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 290502428 is about 17044.1317760689. The cubic root of 290502428 is about 662.2926299118.

The spelling of 290502428 in words is "two hundred ninety million, five hundred two thousand, four hundred twenty-eight".